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/* ----------------------------------------------------------------------- *
*
* Copyright 2007-2009 H. Peter Anvin - All Rights Reserved
* Copyright 2009 H. Peter Anvin - All Rights Reserved
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall
* be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* ----------------------------------------------------------------------- */
/*
* memscan.c
*
* Query the system for free memory
*/
#include <syslinux/memscan.h>
static LIST_HEAD(syslinux_memscan_head);
/*
* Add a memscan entry to the list.
*/
void syslinux_memscan_add(struct syslinux_memscan *entry)
{
list_add(&entry->next, &syslinux_memscan_head);
}
/*
* Build a new memscan entry and add it to the list.
*/
int syslinux_memscan_new(int func(scan_memory_callback_t, void *data))
{
struct syslinux_memscan *entry;
entry = malloc(sizeof *entry);
if (!entry)
return -1;
entry->func = func;
syslinux_memscan_add(entry);
return 0;
}
int syslinux_scan_memory(scan_memory_callback_t callback, void *data)
{
struct syslinux_memscan *entry;
int rv = 0;
list_for_each_entry(entry, &syslinux_memscan_head, next) {
rv = entry->func(callback, data);
if (rv)
break;
}
return rv;
}
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